Lake Dan
Lake Dan in Hillsborough County, Florida is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 4.9 ft visibility.
- Clarity
- 4.9 ft
- Typical in August
- 90°F
- Trend
- ↓ Declining
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Why Lake Dan has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Lake Dan, the only measurement available is water clarity, which is not a water-quality indicator on its own — EPA's National Lakes Assessment does not grade clarity. Sampling here has recorded water clarity, but not phosphorus and algae (chlorophyll-a).
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by FDEP and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Lake Dan is a lake in Hillsborough County, Florida. Overall water quality is declining over recent sampling years.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2024-07-30. Grade methodology: LakeQuality methodology.
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Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Lake Dan
These readings exist but are not enough for an A–F grade — see why.
Murky, only visible to about 4.9 ft. Trophic State Index: 54.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4.9 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 54 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Lake Dan
Compare lakeside cabins, hotels, and vacation rentals near Lake Dan in Hillsborough County, Florida — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Lake Dan
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Florida’s top lakes →
Water Temperature
Lake Dan typically sits around 90°F at the surface in August. Summer average is about 90°F. Usually warmest in Jun (about 90°F) and coldest in Jan (about 65°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 70 field readings (2017–2024) via the EPA Water Quality Portal. See the full Lake Dan water temperature breakdown →
Fishing Lake Dan
Water Quality Trend: ↓ Declining
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.255 m/yr | 5 |
| Phosphorus | ↓ Declining | +6.5 µg/L/yr | 5 |
Graded lakes near Lake Dan
Lake Dan has no grade, but these lakes within a short drive do.
Nearby Lakes in Hillsborough County
Frequently asked questions about Lake Dan
Where is Lake Dan?
- Lake Dan is a lake in Hillsborough County, Florida. LakeQuality has not rated this lake (UNRATED) — the only measurement available is water clarity, which is not a water-quality indicator on its own — EPA's National Lakes Assessment does not grade clarity.
What is the water quality grade for Lake Dan?
- Lake Dan in Hillsborough County, Florida is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 4.9 ft visibility.
Is Lake Dan safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Lake Dan is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
What is the water temperature of Lake Dan?
- Lake Dan typically sits around 90°F at the surface in August, from 70 EPA Water Quality Portal field readings (2017–2024). That is a typical value for the month, not a live reading.
Explore Lake Dan across LakeQuality
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Where this data comes from
46 measurements from 1 monitoring station, 2020–2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- North American Lake Management Society
NALMS46 samples · 2020–2024
Monitoring station identifiers (1)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.